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5–Installation in a VMware Environment
Configuring the Driver Parameters
5-16 FE0254601-00 A
4. Reboot the server to place the parameter changes into effect.
# reboot
Table 5-1 describes the configurable QLogic driver parameters.
Table 5-1. esxcfg-module Configurable Driver Parameters
Driver Parameter Description
ql2xallocfwdump Enables (1) or disables (0) allocation of memory for a
firmware dump during adapter initialization. Memory
allocation requirements vary by ISP type. The default
is 0.
ql2xcmdtimeout Timeout value for the scsi command in seconds.
Default is 20.
ql2xenablemsi Enables (1) or disables (0) the MSI-X/MSI interrupt
scheme. Default is 0.
ql2xexecution_throttle I/O control block exchange count for the adapter. The
default is 0.
ql2xextended_error_logging Enables (1) or disables (0) extended error logging.
The default is 0.
ql2xiidmaenable Enables (1) or disables (0) iIDMA settings. The default
is 1.
ql2xintrdelaytimer Number of seconds before the firmware sends an
interrupt to the host indicating request completion.
ql2xioctltimeout Ioctl timeout value for pass-through commands in sec-
onds. Default is 66.
ql2xloginretrycount Number of login retries allowed.
ql2xlogintimeout Login timeout value in seconds. Default is 20.
ql2xmaxqdepth Maximum queue depth to report for target devices.
Default is 32.
ql2xmaxsgs Maximum scatter or gather entries per I/O request.
Default is 32.
ql2xoperationmode Enables or disables operation mode for 2Gb or 4Gb
Fibre Channel adapters. For 2Gb Fibre Channel
adapters, set to 0x5 to enable zero input-output (ZIO)
mode. For 4Gb Fibre Channel adapters, set to
0x5/0x6 to enable ZIO mode.